re PR c/43384 (ICE: Segmentation fault with invalid K&R-like code)

gcc/

2010-11-16  Simon Martin  <simartin@users.sourceforge.net>

	PR c/43384
	* c-decl.c (lookup_label): Labels can only be referenced in a
	function's scope. 
	(store_parm_decls_oldstyle): Skip erroneous parameters.

gcc/testsuite/
 
2010-11-16  Simon Martin  <simartin@users.sourceforge.net>

	PR c/43384
	* gcc.dg/parser-error-3.c: New test.

From-SVN: r166408

gcc/ChangeLog

+2010-11-06  Simon Martin  <simartin@users.sourceforge.net>
+
+	PR c/43384
+	* c-decl.c (lookup_label): Labels can only be referenced in a
+	function's scope. 
+	(store_parm_decls_oldstyle): Skip erroneous parameters.
+
 2010-11-06  Anatoly Sokolov  <aesok@post.ru>
 
 	* config/fr30/fr30.h (FUNCTION_VALUE_REGNO_P, FUNCTION_VALUE,

gcc/c-decl.c

@@ -3013,7 +3013,7 @@ lookup_label (tree name)
   tree label;
   struct c_label_vars *label_vars;
 
-  if (current_function_decl == 0)
+  if (current_function_scope == 0)
     {
       error ("label %qE referenced outside of any function", name);
       return 0;
@@ -7847,6 +7847,9 @@ store_parm_decls_oldstyle (tree fndecl, const struct c_arg_info *arg_info)
       if (b && B_IN_CURRENT_SCOPE (b))
 	{
 	  decl = b->decl;
+	  /* Skip erroneous parameters.  */
+	  if (decl == error_mark_node)
+	    continue;
 	  /* If we got something other than a PARM_DECL it is an error.  */
 	  if (TREE_CODE (decl) != PARM_DECL)
 	    error_at (DECL_SOURCE_LOCATION (decl),

gcc/testsuite/ChangeLog

+2010-11-06  Simon Martin  <simartin@users.sourceforge.net>
+
+	PR c/43384
+	* gcc.dg/parser-error-3.c: New test.
+
 2010-11-06  Nathan Froyd  <froydnj@codesourcery.com>
 
 	PR c++/45332

gcc/testsuite/gcc.dg/parse-error-3.c

+/* PR c/43384 */
+/* { dg-do "compile" } */
+
+void c_direct(par)
+     void *par = &&lab; /* { dg-error "is initialized|non-standard|outside of" } */
+{}
+
+void foo(p, q)
+     int *p = &q; /* { dg-error "initialized|undeclared" } */
+{}
+
+void bar(i)
+     int j = i; /* { dg-error "initialized|undeclared|no such parameter" } */
+{}